Steam-valve wheel



No. 608,740. Patented Aug. 9, I898. B. G. WIEDER.

STEAM VALVE WHEEL.

(Application filed May 14, 1897.)

(No Model.)

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BENJAMIN GEORGE XVIEDER, OF SEIGFRIEDS BRIDGE, PENNSYLVANIA.

STEAM VALVE. WH EEL.

SPECIFICATION forming part of Letters Patent No. 608,740, dated August 9, 1898.

Application filed May 14, 1897. Serial No. 686,509. (No model.) I

To all whom it may concern:

Be it known that I, BENJAMIN GEORGE WIEDER, of Seigfrieds'Bridge, in the county of Northampton and State of Pennsylvania, have invented certain new and useful Improvements in Steam-Valve Wheels; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use the same.

This invention has reference to a novel construction in a hand-wheel for steam-valves and the like, the object being to provide a construct-ion whereby the rim of the handwheel will not become unduly heated.

The invention consists in the features of construction hereinafter fully described and specifically claimed.

In the accompanying drawings, forming a part of this specification, Figure 1 is a perspective view of a hand-wheel and a portion of a spindle constructed in accordance with this invention. Fig. 2 is a cross-section of the same. Fig. 3 is a perspective View of the spider detached. Fig. 4 is a perspective view of the under side of the rim detached.

Referring now to said drawings, 1 indicates the spindle or stem of a valve, and 2 the handwheel. The said hand-wheel consists of the spider 3 and the rim 4. The rim and spider are both cast in separate pieces and are connected together in a rigid manner, although with an interposed non-conducting layer between the outer ends of the legs of the spider and the said rim, which serves to prevent the said rim from becoming unduly heated. The lower side of the rim is provided with a plurality of notches 5, that receive the feet 6 at the end of the spider-legs. These feet are wider than the legs and fit nicely within the notches, while the outer or lower faces of the feet conform to the contour of the lower face of the rim, so that when these parts are fastened together they present a practically continuous surface. To make a firm joint, said legs are provided 'with outwardly facing shoulders 7 near their outer ends or just inwardly of the feet, which serve to abut against the inner face of the rim in the manner shown. On the sides of the notches 5 is a layer 8 of a material that is a poor conductor of heatsuch as, for instance, asbestos -while the screws 9, by means of which the rim and spider are connected together, pass loosely through countersunk openings 10 in the feet 6. In the countersunk portions of the openings 10 are situated the conical .washers 11, between which and the countersunk openings is interposed a layer 12, also of material that is a poor conductor of heat. The conical washers 11 receive the heads of the screws, as shown, and it will be noted that the washers and screws lie flush with the outer faces of the feet. In this way it is seen that the hand-wheel is practically a solid piece but can be made in two castings in the manner shown, and, furthermore, that the heat will not be conveyed to the rim sufficiently to make the same uncomfortable to handle.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is

1. A hand-wheel consisting of a rim provided with notches, a spider having legs provided with feet at their outer ends, an outwardlyfacing shoulder between said legs and feet, and layers of material that is a poor conducter of heat situated between said feet and the walls of said notches.

2. A hand-wheel consisting of a rim and spiders secured thereto by means of screws, washers surrounding the heads of said screws, and layers of material that is a poor conductor of heat situated between said washers and the openings and the legs of the spiders and between the legs of said spider and rim.

In testimony whereof I have signed this specification in the presence of two subscri'o ing witnesses.

BENJAMIN GEORGE WIEDER.

Witnesses:

ORILL. P. SEUsUeIE, GEORGE W. MILLER. 

